The lecture will last for about 40 minutes and there will be given sufficient time for questions. Intended audience: Public lecture for general audience.
Our Universe is a fascinated place filled with astronomical objects whose nature and origin we still try to comprehend. From our point of view the Earth and Sun are the most important as they support life, the only one known to us in the entire Universe. On the other hand, the Universe has very profound mysteries that we attempt to solve. One of them is whether there is life on any of the newly discovered extra-solar planetary systems. Moreover, the Universe seems to be dominated by mysterious Dark Energy and Dark Matter, which we know that they exist and yet we do not know what they actually are and why they are so prominent in our Universe. The main emphasis of this talk will be on these mysteries of the Universe and on our attempts to solve them.